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seafloor

Posted inEditors' Vox

Could Subsea Methane Hydrates Be a Warming “Tipping Point”?

by Alan Robock 13 April 201731 July 2023

The authors of a recent paper in Reviews of Geophysics answer questions about the potential for subsea methane hydrates to contribute to global warming.

Researchers look at offshore sediments to trace the history of the world’s tallest coastal mountain range
Posted inResearch Spotlights

A Mountain Range's History Preserved in Ocean Sediments

by Terri Cook 7 April 201729 June 2022

Fission track dating core samples from the Gulf of Alaska demonstrates that offshore sediments can be used to reconstruct a mountain range's changing exhumation patterns.

A hollow lava balloon recovered from the 1998-2001 eruption near the Azores, Portugal.
Posted inNews

Balloons of Lava Bubble into the Ocean from Seafloor Blisters

by Lauren Lipuma 5 April 20174 October 2021

These peculiar features of submarine volcanic eruptions could be the result of undersea lava lakes.

The cable ship René Descartes lays an underwater fiber optic cable near the Isle of Lewis in the Outer Hebrides.
Posted inScience Updates

Commercial Underwater Cable Systems Could Reduce Disaster Impact

by F. Tilmann, B. M. Howe and R. Butler 23 March 201710 February 2023

Workshop on SMART Cable Applications in Earthquake and Tsunami Science and Early Warning; Potsdam, Germany, 3–4 November 2016

Most airline passengers have no idea how little of the seafloor beneath them has been mapped.
Posted inOpinions

Airline Flight Paths over the Unmapped Ocean

by W. H. F. Smith, K. M. Marks and T. Schmitt 8 March 201729 September 2021

An assessment of ocean depth knowledge underneath commercial airline routes shows just how much of the seafloor remains "terra incognita."

The search for Malaysian Airlines flight MH370 produced this detailed view of the landscape deep in the Indian Ocean.
Posted inScience Updates

Geological Insights from Malaysia Airlines Flight MH370 Search

by K. Picard, B. Brooke and M. F. Coffin 6 March 201726 September 2023

A rich trove of marine geophysical data acquired in the search for missing flight MH370 is yielding knowledge of ocean floor processes at a level of detail rare in the deep ocean.

Plastic fragments mingle with sponges.
Posted inNews

Mounting Litter Spotted on Arctic Seafloor

Katherine Kornei, Science Writer by Katherine Kornei 16 February 201723 March 2023

At one location near Greenland, the density of undersea trash leaped by a factor of 23 in a decade.

Antarctic research team scrapes sediment cores from 1200 meters below the seafloor near the Cosgrove Ice Shelf.
Posted inNews

Déjà Vu? Ocean Warmth Melted Ancient West Antarctic Ice Shelf

Sarah Derouin, Science Writer by Sarah Derouin 30 January 201713 December 2021

Clues in seafloor sediments reveal that relatively warm water beneath western Antarctic ice shelves, a major factor in today's massive ice sheet retreat, also fueled some past ice loss.

Bathymetry image of Brothers Seamount and caldera, an undersea volcano off the coast of New Zealand.
Posted inScience Updates

A Name Directory for the Ocean Floor

by V. Stagpoole, H. W. Schenke and Y. Ohara 22 November 20161 October 2021

New Web resources enable scientists to standardize the naming of seamounts, trenches, and other undersea features, reducing ambiguity in identification and communication.

Models reconstruct past ice sheets to better understand future climate change.
Posted inResearch Spotlights

Ancient Ocean Floor Seashells Improve Model of Past Glaciers

by E. Underwood 1 November 20164 May 2022

More accurate reconstruction of ice sheets over the past 150,000 years could help scientists predict future climate change.

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